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2026-06-25 - 11:08
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Thu Jun 25, 2026 01:01:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28914992482,241cyclictest3545-21CPU13
28914992482,241cyclictest3545-21CPU13
28914992471,2cyclictest0-21swapper/2022:51:1213
28914992471,2cyclictest0-21swapper/2022:51:1213
28914992430,2cyclictest0-21swapper/2022:40:1813
28914992430,2cyclictest0-21swapper/2022:40:1813
28914992421,3cyclictest1367-21dbus-daemon00:09:4813
28914992421,3cyclictest1367-21dbus-daemon00:09:4713
28914992411,2cyclictest0-21swapper/2022:06:5713
28914992411,2cyclictest0-21swapper/2022:06:5713
28914992381,233cyclictest0-21swapper/2023:50:2013
28914992381,233cyclictest0-21swapper/2023:50:2013
28914992362,231cyclictest17484-21nfsd22:45:2213
28914992362,231cyclictest17484-21nfsd22:45:2213
28914992361,2cyclictest0-21swapper/2022:22:4213
28914992361,2cyclictest0-21swapper/2022:22:4213
28914992361,232cyclictest0-21swapper/2023:27:0213
28914992361,232cyclictest0-21swapper/2023:27:0113
28914992361,231cyclictest0-21swapper/2021:10:1213
28914992361,231cyclictest0-21swapper/2021:10:1213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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